| Battlebridge Maintenance Services (Group) Ltd | Construction | 2025 |
| Battlebridge Maintenance Services (Installations) Ltd | Construction | 2025 |
| Battlebridge Maintenance Services (London) Ltd | Construction | 2025 |
| Battlebridge Maintenance Services (Southern) Ltd | Construction | 2024 |
| Batts Hill Distillers Ltd | Manufacturing | 2020 |
| Baxter Glaysher Consulting Limited | Professional & scientific | 1998 |
| Baygain Limited | Professional & scientific | 1994 |
| Baymanor Limited | Construction | 1994 |
| Bbcjob Ltd | Information & communication | 2025 |
| BC Physiotherapy Ltd | Public administration | 2025 |
| BCC (Exhibitions) Limited | Administrative & support | 1987 |
| BE Cool Services Ltd | Construction | 2023 |
| Beacon Hill Studios Ltd | Information & communication | 2026 |
| Bear Lane Productions Ltd | Administrative & support | 2024 |
| Beautiful Insights Ltd | Information & communication | 2013 |
| Beauxwood Limited | Professional & scientific | 2023 |
| Beckywiththegoodskin Ltd. | Other services | 2017 |
| BEE Environmental Group Limited | Professional & scientific | 2016 |
| Beeches Interiors Ltd | Administrative & support | 2025 |
| Beechwood Hotel Limited | Hospitality | 1991 |
| Beer Lanyard FC Ltd | Arts & recreation | 2025 |
| Beks Beds Ltd | Real estate | 2019 |
| Belgravebridge Limited | Financial services | 1978 |
| Bell Carriage Limited | Transport & logistics | 2001 |
| Bellanca Productions Limited | Information & communication | 2007 |
| Bellevue House (Horley) Management Company Limited | Households | 2011 |
| BELLST2021 (Park House) Management Company Limited | Real estate | 2023 |
| BELLST2021 Management Company Chalk Hills Limited | Real estate | 2022 |
| Belmore Estates Limited | Real estate | 1994 |
| Belotti Construction Ltd | Construction | 2026 |
| Benilus Limited | Health & social care | 2015 |
| Bennetts Builders Limited | Construction | 2014 |
| Bens Courier Direct Ltd | Wholesale & retail | 2020 |
| Bentley Roofing Limited | Construction | 2012 |
| Beronworth Energy Systems Limited | Professional & scientific | 2008 |
| Beronworth Standby Systems Limited | Manufacturing | 1985 |
| Berran Consulting Limited | Professional & scientific | 2014 |
| Bertolli Heating & Plumbing Ltd | Construction | 2016 |
| Bespoke Financial Services Ltd | Financial services | 2022 |
| Bespokeffe Limited | Professional & scientific | 2014 |
| Better Business Networks Ltd | Information & communication | 2020 |
| Better FIX UK Ltd | Construction | 2026 |
| Better Living Group Limited | Real estate | 2021 |
| Beverage Innovation Group Ltd | Financial services | 2023 |
| BEW Engineering Limited | Professional & scientific | 2012 |
| Beyond Bizways Ltd | Wholesale & retail | 2025 |
| Beyond Budgeting Association Limited | Professional & scientific | 2013 |
| Beyond Budgeting Limited | Professional & scientific | 2013 |
| Beyondserviceai Ltd | Information & communication | 2024 |
| BFG Mobile Mechanics (Surrey) Ltd | Wholesale & retail | 2025 |
| BG Gatwick Ltd | Other services | 2016 |
| BG Volleyball Academy Ltd | Arts & recreation | 2025 |
| BGS Grab & Haulage Hire Ltd | Administrative & support | 2021 |
| BHP Consultants Ltd | Professional & scientific | 2026 |
| Bibby Trades Ltd | Construction | 2020 |
| Big Coffee Brands Ltd | Manufacturing | 2025 |
| Big Common Lane Limited | Households | 2002 |
| BIM Synergy Ltd | Professional & scientific | 2023 |
| Biobot Limited | Information & communication | 2026 |
| Bipin Thomas Ltd | Administrative & support | 2022 |
| Birchwood Place (Redhill) Management Company Limited | Households | 2005 |
| Bits in Glass UK Ltd | Information & communication | 2017 |
| BK Esellers Ltd | Wholesale & retail | 2024 |
| BKM Renovations Limited | Construction | 2020 |
| Black and White Bear Studios Ltd | Arts & recreation | 2021 |
| Black Cat Building Surveys Limited | Professional & scientific | 2015 |
| Black Penny Consulting Ltd | Information & communication | 2008 |
| Black Tier Capital Ltd | Financial services | 2025 |
| Blackfold Properties Limited | Other services | 2025 |
| Blackhat Limited | Other services | 2015 |
| Blackthorn and Hyde Ltd | Wholesale & retail | 2025 |
| Blackthorn Homes Limited | Construction | 2015 |
| Blackthorn Land Limited | Construction | 2019 |
| Blendi's Limited | Hospitality | 2022 |
| Bletchingley Church House Administration Limited | Real estate | 2016 |
| Blinc-Uk Ltd | Administrative & support | 2008 |
| Bliss Bliss Limited | Wholesale & retail | 2023 |
| Blue Arrow Gatwick Ltd | Transport & logistics | 2012 |
| Blue Bengal Chippy Limited | Hospitality | 2025 |
| Blue Bond Accelerator Limited | Agriculture & fishing | 2025 |
| Blue Fourteen Creative Agency Limited | Professional & scientific | 2011 |
| Blue Hoop Consulting Limited | Information & communication | 2019 |
| Blue Horse Films International Limited | Information & communication | 2015 |
| Blue Light Training Providers Association | Other services | 2014 |
| Blue Mango Holdings Limited | Administrative & support | 2024 |
| Blue Sky Freedom Limited | Administrative & support | 2017 |
| Bluebird Bespoke UK Ltd | Construction | 2025 |
| Bluecom Group Limited | Information & communication | 1994 |
| Bluedrop Shop Ltd | Wholesale & retail | 2026 |
| Bluefin Workshop & Events Ltd | Arts & recreation | 2025 |
| Bluekit Medical Limited | Manufacturing | 2012 |
| Blush Management Limited | Administrative & support | 2005 |
| Bms-Bigwood Mechanical Services Limited | Extraterritorial | 2014 |
| Bms-Bulk Meter Services Group Ltd | Financial services | 2022 |
| Bms-Bulk Meter Services Limited | Manufacturing | 1994 |
| BNP Care Ltd | Health & social care | 2018 |
| BNP Holdings Limited | Real estate | 2025 |
| Boakes Consulting Limited | Professional & scientific | 2007 |
| Boarder Security Limited | Wholesale & retail | 2002 |
| Bocketts Farm Limited | Arts & recreation | 2003 |